CA2638159A1 - Method and apparatus for treating a cellulosic feedstock - Google Patents

Method and apparatus for treating a cellulosic feedstock Download PDF

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Publication number
CA2638159A1
CA2638159A1 CA2638159A CA2638159A CA2638159A1 CA 2638159 A1 CA2638159 A1 CA 2638159A1 CA 2638159 A CA2638159 A CA 2638159A CA 2638159 A CA2638159 A CA 2638159A CA 2638159 A1 CA2638159 A1 CA 2638159A1
Authority
CA
Canada
Prior art keywords
cellulosic feedstock
moisture
mixing vessel
amount
moisture content
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2638159A
Other languages
French (fr)
Other versions
CA2638159C (en
Inventor
Murray J. Burke
Sunalie N. Hillier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mascoma Canada Inc
Original Assignee
Sunopta Bioprocess Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sunopta Bioprocess Inc filed Critical Sunopta Bioprocess Inc
Priority to CA2638159A priority Critical patent/CA2638159C/en
Priority to US12/181,640 priority patent/US8778084B2/en
Priority to PCT/CA2009/001035 priority patent/WO2010009550A1/en
Publication of CA2638159A1 publication Critical patent/CA2638159A1/en
Priority to US13/014,327 priority patent/US9127325B2/en
Application granted granted Critical
Publication of CA2638159C publication Critical patent/CA2638159C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13K—SACCHARIDES OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DISACCHARIDES, OLIGOSACCHARIDES OR POLYSACCHARIDES
    • C13K1/00—Glucose; Glucose-containing syrups
    • C13K1/02—Glucose; Glucose-containing syrups obtained by saccharification of cellulosic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/2135—Humidity, e.g. moisture content
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M45/00—Means for pre-treatment of biological substances
    • C12M45/03—Means for pre-treatment of biological substances by control of the humidity or content of liquids; Drying
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M45/00—Means for pre-treatment of biological substances
    • C12M45/06—Means for pre-treatment of biological substances by chemical means or hydrolysis
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00—Preparation of compounds containing saccharide radicals
    • C12P19/02—Monosaccharides
    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13K—SACCHARIDES OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DISACCHARIDES, OLIGOSACCHARIDES OR POLYSACCHARIDES
    • C13K13/00—Sugars not otherwise provided for in this class
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P2201/00—Pretreatment of cellulosic or lignocellulosic material for subsequent enzymatic treatment or hydrolysis
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P2203/00—Fermentation products obtained from optionally pretreated or hydrolyzed cellulosic or lignocellulosic material as the carbon source
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P7/00—Preparation of oxygen-containing organic compounds
    • C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
    • C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
    • C12P7/06—Ethanol, i.e. non-beverage
    • C12P7/08—Ethanol, i.e. non-beverage produced as by-product or from waste or cellulosic material substrate
    • C12P7/10—Ethanol, i.e. non-beverage produced as by-product or from waste or cellulosic material substrate substrate containing cellulosic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel

Abstract

A method and apparatus for treating a cellulosic feedstock, such as for subsequent ethanol production, are disclosed. The method comprises determining an initial moisture content of the cellulosic feedstock and adding an amount of moisture to the cellulosic feedstock to obtain a predetermined moisture content of the cellulosic feedstock, wherein the cellulosic feedstock may subsequently be subjected to hydrolysis. The apparatus comprises a moisture sensor that provides an initial moisture content reading of the cellulosic feedstock, and a weight sensor providing the weight of the cellulosic feedstock.
A processor is configured to determine an amount of moisture to be added to the cellulosic feedstock based on the weight and the initial moisture content of the cellulosic feedstock to obtain treated cellulosic feedstock having a predetermined moisture content.

Claims (27)

1. A method for treating a cellulosic feedstock comprising:
a) determining an initial moisture content of the cellulosic feedstock;
b) adding an amount of moisture to the cellulosic feedstock to obtain a predetermined moisture content of the cellulosic feedstock; and, c) subsequently subjecting the cellulosic feedstock to hydrolysis.
2. The method of claim 1, wherein step b) comprises determining the amount of moisture required to obtain the predetermined moisture content based on the weight of the cellulosic feedstock and the initial moisture content of the cellulosic feedstock; and, adding the amount of moisture.
3. The method of claim 1, wherein steps a) and b) are performed automatically.
4. The method of claim 1, wherein steps a) and b) are performed on a continuous basis.
5. The method of claim 1, wherein the initial moisture content is less than 15 wt % based on the total weight of the cellulosic feedstock.
6. The method of claim 5, wherein the predetermined moisture content is about 30% to 60 wt % based on the total weight of the cellulosic feedstock.
7. The method of claim 1, further comprising determining a weight of the cellulosic feedstock as the cellulosic feedstock is conveyed to a mixing vessel.
8. The method of claim 1, further comprising conveying the cellulosic feedstock through a mixing vessel and, adding at least a portion of the amount of moisture to the cellulosic feedstock while the cellulosic feedstock is conveyed through the mixing vessel.
9. The method of claim 8, further comprising adding moisture to the cellulosic feedstock through multiple inlet ports provided on the mixing vessel.
10.The method of claim 9, further comprising completing addition of the amount of moisture prior to conveying the cellulosic feedstock through a downstream portion of the mixing vessel.
11. The method of claim 1, further comprising adding at least a portion of the amount of moisture prior to conveying the cellulosic feedstock through a mixing vessel.
12. The method of claim 11, further comprising passing the cellulosic feedstock downwardly into the mixing vessel while exposing the cellulosic feedstock to droplets of water of between 600 µ and 6000 µ in diameter.
13.The method of claim 1, further comprising heating the cellulosic feedstock while conveying the cellulosic feedstock through a mixing vessel and completing addition of the amount of moisture prior to conveying the cellulosic feedstock through a downstream portion of the mixing vessel wherein the cellulosic feedstock has a temperature less then 50°C prior to entering the mixing vessel and a temperature from 50°C to 70°C after exiting the mixing vessel.
14. The method of claim 1, further comprising adding a hydrolysis catalyst with the moisture.
15.The method of claim 1, wherein the cellulosic feedstock is heated while the amount of moisture is added.
16. The method of claim 1, wherein the initial moisture content of each segment of cellulosic feedstock is determined and the amount of moisture to obtain a predetermined moisture content is provided to that segment of the cellulosic feedstock.
17.A cellulosic feedstock treatment apparatus, comprising:
a) a moisture sensor providing an output value corresponding to an initial moisture content of the cellulosic feedstock;
b) a weight sensor providing an output value corresponding to a weight of the cellulosic feedstock;
c) a processor coupled to the moisture sensor and the weight sensor, the processor being configured to determine an amount of moisture to be added to the cellulosic feedstock based on the weight of the cellulosic feedstock and the initial moisture content of the cellulosic feedstock to obtain treated cellulosic feedstock having a predetermined moisture content; and, d) a mixing vessel downstream from the weight sensor.
18.The apparatus of claim 17, wherein the weight sensor comprises a weighing conveyor.
19.The apparatus of claim 17, wherein the mixing vessel comprises a longitudinally extending volume having an inlet, an opposed outlet and a conveyance member positioned inside the volume.
20.The apparatus of claim 19, further comprising a passage from the weight sensor to the inlet wherein at least a portion of the passage extends downwardly.
21.The apparatus of claim 20, wherein the portion comprises at least one moisture injection port.
22.The apparatus of claim 21, wherein the at least one moisture injection port is configured to provide discrete droplets of water of between 600 µ and 6000 µ in diameter.
23. The apparatus of claim 20, wherein an upstream portion of the mixing vessel has multiple water injection ports.
24. The apparatus of claim 19, wherein a downstream portion of the mixing vessel has an absence of water injection ports.
25. The apparatus of claim 19, wherein the mixing vessel has a heating jacket.
26.The apparatus of claim 17, further comprising a downstream hydrolysis reactor.
27. The apparatus of claim 17, wherein the processor provides a signal to at least one moisture addition member and the signal is lagged by an amount of time corresponding to the time for a segment of cellulosic feedstock to travel from the moisture sensor to a moisture addition zone containing the at least one moisture addition member.
CA2638159A 2008-07-24 2008-07-24 Method and apparatus for treating a cellulosic feedstock Expired - Fee Related CA2638159C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2638159A CA2638159C (en) 2008-07-24 2008-07-24 Method and apparatus for treating a cellulosic feedstock
US12/181,640 US8778084B2 (en) 2008-07-24 2008-07-29 Method and apparatus for treating a cellulosic feedstock
PCT/CA2009/001035 WO2010009550A1 (en) 2008-07-24 2009-07-22 Method and apparatus for treating a cellulosic feedstock
US13/014,327 US9127325B2 (en) 2008-07-24 2011-01-26 Method and apparatus for treating a cellulosic feedstock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2638159A CA2638159C (en) 2008-07-24 2008-07-24 Method and apparatus for treating a cellulosic feedstock

Publications (2)

Publication Number Publication Date
CA2638159A1 true CA2638159A1 (en) 2010-01-24
CA2638159C CA2638159C (en) 2012-09-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2638159A Expired - Fee Related CA2638159C (en) 2008-07-24 2008-07-24 Method and apparatus for treating a cellulosic feedstock

Country Status (3)

Country Link
US (1) US8778084B2 (en)
CA (1) CA2638159C (en)
WO (1) WO2010009550A1 (en)

Cited By (5)

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WO2010083600A1 (en) * 2009-01-23 2010-07-29 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
US8778084B2 (en) 2008-07-24 2014-07-15 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for treating a cellulosic feedstock
US9004742B2 (en) 2009-01-23 2015-04-14 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
US9010522B2 (en) 2008-07-24 2015-04-21 Abengoa Bioenergy New Technologies, Llc Method and apparatus for conveying a cellulosic feedstock
US9127325B2 (en) 2008-07-24 2015-09-08 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for treating a cellulosic feedstock

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